Operation: To operate your Solarmeter, aim the sensor window located on the top panel of the meter directly at a UV source. Press and hold the push-button switch on the face of the meter. For best results take note of the distance the reading was taken from the UV source in order to ensure repeatable results. Battery operation voltage is viable from 9V down to 6.5V. Below 6.5V, the numbers on the LCD display will begin to dim, indicating the need for battery replacement. Under typical service load, a standard 9V battery will last approximately 2 years.

Lamps should be replaced when output drops to about 70% of their original (new) readings. Keep track of hours vs. readings on a chart.

If unsure of what original new values were, replace two adjacent lamps with new ones of the same kind and compare old ones.

When checking acrylic transmission, take reading through acrylic; then remove acrylic and hold meter sensor at approximately the same distance from lamp as the acrylic shield was located. If acrylic blocks much UV it should be replaced.

Do not subject the meter to extremes in temperature, humidity, shock or dust.

Use a dry, soft cloth to clean the intrument. Keep sensor free of oil, dirt, etc.